Why+did+the+Nazis+only+persecute+the+Jewish+people?

Why did the Nazis only persecute the Jewish People?
===During the era of the Holocaust, German authorities also targeted other groups because of their perceived "racial inferiority": Roma (Gypsies), the disabled, and some of the Slavic peoples (Poles, Russians, and others). Other groups were persecuted on political, ideological, and behavioral grounds, among them Communists, Socialists, Jehovah's Witnesses, and homosexuals.===

What was the Nazi's goal?